0  387058  387066  387072  387076  387082  387084  387088  387094  387096  387102  387108  387112  387114  387118  387124  387126  387132  387136  387138  387142  387144  387148  387150  387152  387153  387154  387156  387157  387158  387160  387162  387166  387168  387172  387174  387178  387184  387186  387192  387196  387198  387202  387208  387214  387216  387222  387226  387228  387234  387238  387244  387252  447090 

7.-______ I lock the lab before I go home?

-Don’t bother.I’ll check it myself later.

  A.May         B.Must          C.Can           D.Shall

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6.-I got an email from Susan, _  __ said she was going abroad for sightseeing.

-Fantastic! That’s what she has been dreaming of.

    A.which         B.she           C.who           D.it 

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5.I’m not sure whether I will have anything else to do this evening._____, I will try every possible means to come to your birthday party.

    A.Even though     B.If so         C.Anyhow       D.Instead

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4.We needed a new cupboard for the kitchen.So Peter made _____ from some wood we had.     A.it            B.one           C.himself        D.another

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3.He had a burning ________ to win back the teacher’s confidence in him.

   A.desire          B.feeling         C.emotion        D.impression

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2.Pirates from Somalia who hijacked _____European carrier in ______ Indian Ocean threatened to kill its 25 crew members if any rescue operation was attempted.

     A.the; 不填       B.a; the          C.the; a          D. the; the

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22.(本小题满分15分) 已知抛物线C的顶点在原点,焦点为

  (1)求抛物线C的方程;

  (2)已知直线与抛物线C交于两点,且,求的值;

  (3)设点是抛物线C上的动点,点轴上,圆内切于,求的面积最小值.

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